SALICACEiE. 211 



Var. erioeeph'ala, Anders., has densely-flowered and 

 very silky catkins, and the leaves somewhat pubescent even 

 when old. 



8. S. liv'ida, Wahl. Var. oeeidenta'lis, Gray. (S. ros- 

 tra'ta, Eich. , in Macoun's Catalogue.) (LiviD WILLOW.) A 

 good-sized shrub, chiefly in moist situations. Leaves oblong 

 or obovate-lanceolate, barely toothed, downy above, very 

 veiny, hairy and glaucous beneath. Stipules semi-lunar, 

 toothed. Ovary at length raised on a very slender stalk 

 Catkins appearing with the leaves. 



9. S. hu' mills, Marshall. (PRAIRIE WILLOW.) A grayish 

 shrub, 3-8 feet high, growing usually in dry or barren 

 places. Leaves oblanceolate, pointed, the lowest obovate, 

 slightly downy above, thickly so beneath. Stipules semi- 

 ovate or moon-shaped, with a few teeth, shorter than the 

 petioles. Catkins ovoid, sessile, before the leaves, naked at 

 the base. Scales dark red or brownish. 



10. S. petlola'ris, Smith. (PETIOLED WILLOW.) A low 

 shrub on sandy river banks. Leaves narrowly lanceolate, 

 finely and evenly serrate, silky-gray or glaucous beneath, 

 smooth above. Catkins with a few small leaf-like bracts at 

 the base. Scales of the fertile catkins acute, very hairy. 

 Ovary tapering, silky, stalked. 



11. S. ean'dida, Willd. (HOARY WILLOW.) A shrub not 

 more than 3 or 4 feet high, growing in bogs and wet places ; 

 the twigs and leaves clothed with a web-like wool, giving 

 the whole plant a whitish aspect. Leaves lanceolate, nar- 

 row, with somewhat revolute margins. Stipules small, 

 lanceolate, toothed. Catkins cylindrical. Anthers red. 



->- *- Ovaries glabrous. 



12. S. eorda'ta, Muhl. (HEART -LEAVED WILLOW.) A 

 shrub or small tree, growing in wet grounds. Leaves lance- 

 olate, not always heart-shaped, sharply serrate, smooth, 

 green both sides. Catkins cylindrical, rather slender, leafy- 

 bracted at the base, the sterile ones silky. Var. ang'USta'ta 

 has long narrow leaves. 



